Cotter pin



Patented Mar. lo, 1925; I

MATTHEW ponerlas; or RYE, NEW Yo'nK.

,App1ianon fnea :vial-'chf e, 1924. Vsemi No. 697,322. 1

I To all 11i/wm 'it may concern .1

Be it known that I, MATTHEW L. DOUG- Las, a citizen of the United States5 residing at Rye, inthe county of vWestchester and State of New York, have invented certain new and useful Improvements in Cotter Pins,- of which the following is a specificatio-n.

This invention relates to a cotter pin, and particularly to a construction wherein the pin not only retains a nut against removal from its cooperating bolt vbut alsov holds the nut at its threaded adjustment. In the ordinary use of cotter pins for retaining nuts the bolt aperture lis frequently so positioned that when the nut is tightened it is out of Contact with the inserted cotter pin and is thus free for unthreading action whichfis liable to cause a shearing ofl the pin and in any event defeats a proper locking of the nut upon its bolt. To avoid these objections it is found desirable to provide a cotter pin with a laterally disposed head of suliicient length to engage the nut wheny in tightened position upon the bolt' even though the nut be removed from the bolt aperture inwhich the cotter pin is secured.

The invention has for an object to provide a novel and improved construction comprising a cotter pin formed of a continuous piece of material bent upon itself with its bentend disposed at an angle to the .body

to engage the side wall of a nut to be held thereby. i

A furtherl object of the invention is to provide an improved constructon o-f cotter pin in which the bent end is laterally elony.

' gated and disposed at an acute angle to einl fied forni of the cotter pin;

brace a corner of a hexagonal nut to. lock the same against movement upon its cooperating threadedbolt. 4

Other objects and advantages of the invention will be hereinafter set forthv and the novel features thereof defined by the appended claim. p

In the drawing: v l Figure 1 is a perspective of the invention; Figure 2 is an elevation showing the cotter pin applied;

Figure 3 is an end view thereof; j Figure't is an elevation at a right angle to Figure 2'; j v Figure 5 is an elevation showing a modi- Figure 6 is an end View thereof;

`throughout the severalfigures ofthe draw- `Figurey T isv a detail elevation vof 'the modi- `Figure `8 is a plan thereof." ylLike numerals l L refer to The cotter1 pin may beformed of anydesired mate-rial such .as ordinarilyused for j such purposes, and in the formA shown'in Figure 1 the pin is formed of a continuous like parts l PATENT@ FF'IBFP! piece yor strand of material l0v bent upon f,

itself to form the body portion ofthe vpin having the usual legs llfand 12, one 'being of shorter length than the other. At the bent end of this body the head'l is disposed at substantiallya right angle thereto .and is elongated laterally as at 14 to pro zok I.

vide abroad bearingsurface upon the "face of the nutA 15 threaded 4upon vthe bolt 16 as shown in Figure 2. 4 l

The body yof the cotter pin is `inserted through the usual aperture 17 provided in the bolt 16 and the free ends of the pin bent laterally to clinch the same in position as indicated at 18. When the pin is thus inserted the head 4portion extends longitudinally i of the bolt for a sufficient distanceto engage the side wall of the adjusted nut even if the body of the nut be removed from the aperturethrough the bolt. owing to its tightening action so that the headed pin performs the function of a locknut as well as posi-v tively preventing the complete withdrawal of the nutfrorn thebolt even if thehead of the pinis removed from lthe side wall ofthe nut. This headed. portion of the pin also provides a surface by which it may be inserted `by pressure thereon and held while the legs of the pin are bent against the 7bolt so as to tightlysecure the pin vin its adjusted position 'which' effectually prevents any inovement thereof relative to thev y j' to enlarge the field of holding. adjustment, l

'as in the case of a'hexagon nut, vand for this purpose a modified form ofthe invention is shown in Figures 5 to 8 wherein the bolt`20` is provided with a` hexagon nut. 21'

and an aperture 22 therethroughto receive the body 23 of the cotter pin which is` formed-withl .the head portion 24 bent at a right angle .thereto as described in con-- i l i nectionwith Figure l.; `The'elongatedgportionr 25 of this head is disposed atan acute angle, as indicated at 26, to embrace a corner of the adjusted nut and. the` angle of this deflection of the head may be varied` to correspond to any particular character of nut.

It will be seen that the invention provides a very simple form of Cotter pin adapted to be formed by a single and economical manufacturing operation and to cooperate with the ordinary construction of nut Which avoids the necessity of using castellated nuts and the expenseincident ythereto;l The invention provides a very el'licient means for Apositively securingv 1the nut inlv adjusted position and one capable of a variety of `applications mits cooperative relation between of material bent upon itself with a portion of its shank disposed at substantially a right angle to the body and having oppositely extending portions forming substantially parallel members transversely of the shank and connected by the `continulou-sly bent end thereof to provide an elongated head 'for engagement with the-'side Wallof a mat.

In testimony whereof IaiiX my signature.`

MATTHEV L. DOUGLAS. 

